Models

ARM55D

ARM55W ARM55T (with switch)

ARM55C

Usage

Mechanical Relay Dry Contact Output (“a” contact (NO))

(Single / Dual-redundant)

Mechanical Relay Wet Contact Output (Single / Dual-redundant) AUTO/OFF/ON switch (only for ARM55T)

Mechanical Relay

Dry Contack Output

(“a” contact or “b” contact (NO or

NC))

(Single / Dual-redun or dant) (*6)

Contact Points

32-point

32-point

32-point

Terminals for Field Device

Connection

M4 screws

M4 screws

M3.5 screws (*5)

(M4 in power input part)

Modules

ADV551 (DO: 32-point)

+ ATD5A (Terminal block) ADV561 (DO: 64-point) (*1)

ADV551 (DO: 32-point)

+ ATD5A (Terminal block) ADV561 (DO: 64-point) (*1)

ADV551 (DO: 32-point)

+ ATD5A (Terminal block) ADV561 (DO: 64-point) (*1)

Signal Cables

AKB331 (for 32-point) AKB337 (for 64-point)

AKB331 (for 32-point) AKB337 (for 64-point)

AKB331 (for 32-point) AKB337 (for 64-point)

Maximum Load (*2)

250 V AC: 2 A per point

30 V DC: 2 A per point

125 V DC: 0.1 A per point (*3)

250 V AC: 0.6 A per point

30 V DC: 0.6 A per point

125 V DC: 0.1 A per point (*3)

30 V DC: 1.5 A per point

Minimum Load

5 V, 10 mA

5 V, 10 mA

5 V, 10 mA

Power Supply Voltage and Current Consumption of Internal Circuit (require external power supply)

24 V DC Max. 0.65 A

24 V DC Max. 0.65 A

24 V DC Max. 0.85 A

Power Supply for Field

Device

(require external power supply)

-

Dual-line (supply power per 16- point)

250 V AC: Max. 9.6 A

30 V DC: Max. 9.6 A

125 V DC: Max. 1.6 A

-

Insulation Resistance

At least 10 MΩ (500 V DC)

At least 10 MΩ (500 V DC)

At least 10 MΩ (500 V DC)

Withstanding Voltage

Between field device terminals and cases: 2 kV

Between 24 V power terminals and cases: 500 V

Between 24 V power terminals and field device terminals: 2 kV

Between field device terminals and cases: 2 kV

Between 24 V power terminals and cases: 500 V

Between 24 V power terminals and field device terminals: 2 kV

Between field device terminals and cases: 2 kV

Between 24 V power terminals and cases: 500 V

Between 24 V power terminals and field device terminals: 2 kV

Ambient Temperature and

Humidity

0 to 50 °C, 10 to 90 %RH

0 to 50 °C, 10 to 90 %RH

0 to 50 °C, 10 to 90 %RH

Standards

Safety Standard [CSA] (*3) EMC standards [CE Marking], [C-Tick Marking], [KC Marking]

Safety Standard [CSA] (*3) EMC standards [CE Marking], [C-Tick Marking], [KC Marking]

EMC standards [CE Marking], [C-Tick Marking], [KC Marking] (*4)

Size

W: 482.6 mm x H: 132.5 mm (3U)

W: 482.6 mm x H: 177 mm (4U)

W: 482.6 mm x H: 132.5 mm (3U)

Weight

2.2 kg

2.6 kg

2.2 kg